Home / 103,629.07-155,446.23-77,499.67

Finding the Fourth Proportional to 103,629.07, 155,446.23 and 77,499.67

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Solution

The fourth proportional to 103,629.07, 155,446.23 and 77,499.67 is: 116,251.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,629.07 : 155,446.23 = 77,499.67 : x
  2. Step 2: Convert to fraction form
    103,629.07/155,446.23 = 77,499.67/x
  3. Step 3: Cross multiply
    103,629.07x = 155,446.23 × 77,499.67
  4. Step 4: Simplify right side
    103,629.07x = 12,047,031,527.74
  5. Step 5: Solve for x
    x = 12,047,031,527.74/103,629.07
  6. Step 6: Final answer
    x = 116,251.47

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.